Crack propagation and coalescence(14)

RFPA

324C.A.Tang,S.Q.Kou/EngineeringFractureMechanics61(1998)311±324

[18]HanBC,SwobodaG.Adamagemechanicsmodelwithwingcrackspropagation.InComputerMethodsandAdvancesinGeomechanics,2,eds.SiriwardaneHJ,ZamanMM,Balkema,Rotterdam,1994.p.1555±9.[19]TangCA.Numericalsimulationofprogressiverockfailureandassociatedseismicity.Int.J.RockMech.Min.Sci.1997;34:249±62.[20]TangCA,KaiserPK,YangGL.Numericalsimulationofseismicityinrockfailure.InRockMechanics,AubertinM,HassaniF,MitriH,editors.Balkema,Rotterdam,1996.p.1831±40.[21]ChenZH,TangCA,HuangRQ.Int.J.RockMech.Min.Sci.1997;34:.[22]TangCA,KaiserPK.Numericalsimulationofdamageaccumulationandseismicenergyreleaseinunstablefailureofbrittlerock(PartI).Int.J.RockMech.Min.Sci.1998;35:.[23]BradyBHG,BrownET.RockMechanicsforUndergroundMining,2ndedn.ChapamaandHall,London,1993.p.106±8.[24]FairhurstC,CookNGW.Thephenomenonofrocksplittingparalleltothedirectionofmaximumcompressionintheneighbourhoodofasurface.Proc.1stCongInt.Soc.RockMech.Lisboa,Portugal,1966;1:687±92.[25]WawersikWR,BraceWF.Post-failurebehaviorofagraniteanddiabase.RockMech.1971;3:61±5.[26]HallbauerDK,WagnerH,CookNGW.Someobservationsconcerningthemicroscopicandmechanicalbeha-viourofquartizitespecimensinsti ,triaxialcompressiontests.Int.J.RockMech.Min.Sci.1973;10:713±5.[27]TapponnierP,BraceWF.Developmentofstress-inducedmicrocracksinWesterlygraniteInt.J.RockMech.Min.Sci.1976;13:103±12.[28]WongTF.MicromechanicsoffaultinginWesterlygranite.Int.J.RockMech.Min.Sci.1982;19:49±64.